Roll for rolling angle-iron



(N0 d -1 2Sheets-Sheet 1. "J. L. LEWIS. R011 for.Rolling Angle Iron.

2 Sheets-Sheet 2.

I e l 2. Nn W Du n 1 In 0 r 0 f 1 1 o R (No Model.)

Patented May 24, 1881.

VL- N N- PETERS. Phalouflwgnphor. wamh l PATENT OFFICE.

JOHN L. LEWIS, OF PITTSBURG, PENNSYLVANIA.

ROLL FOR ROLLING ANGLE-IRON.

SPECIFICATION forming part of Letters Patent No. 242,007, dated May 24,1881. Application filed March 3, 1881. (No model.)

To all whom it may concern Be it known that I, JOHN L. LEWIS, ofPittsburg, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in Angle-Iron Rolls; and Ido hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same,

IO reference being had to the accompanying drawings, which form a partof this specification.

Figure 1 is an elevation of my new rolls; Figs. 2 and 3, their product.Fig. 4 is an elevation of my rolls; and Figs. 5,6, and 7, their product.

This invention relates to an improvement in angle-iron rolls, and hasreference especially to economy of space in the construction of a set ofrolls, or of a whole train, whereby more sizes can be made in a givenspace of roll-surface than is at present done.

As at present constructed, rolls for rolling angle-iron are made with aseparate and distinct series of grooves for each size of angle- 2 ironto be produced. Such rolls are expensive and necessitate the use of alarge space for a train capable of making a varietyof sizes.- Besides,in a pair of rolls having two sets of.

grooves, if one set wears out before the other,

0 the perfect set becomes useless. These grooves are always madeflatwise, and each set coniprises one or more flattening or roughinggrooves for the billet, several shaping-grooves for forming the angle,and a finishing-groove.

3 5 My invention consists in constructing a pair of angle-iron rollswith the usual roughing.

groove, the intermediate shapin ggrooves, and

the finishing-groove, and, in addition, one or more grooves which I calledging-grooves,

substantially as hereinafter described, wherebyI am enabled to producefrom one pairof rolls,

with but one set of shaping-grooves, two or more sizes of an gle-iron,as will be seen.

In a pending application I have described 5 and claimed a peculiarconstruction and arrangement of grooves for avoiding cracking andinjurious warping and bending of the bar in the production of angle ironby rolling.

While this peculiar formation and arran gement c of grooves is notessential to the practice of my present invention, I will illustrate itin connection with such grooves for the sake of uniformity.

In the drawings, A B designate a pair of angle-iron rolls constructed inaccordance with the principles set forth in my said pending application,having the roughing-pass l, in which the billet is flattened and passesthrough the first stage of preparatory shaping, one or moreshaping-passes, 2 3 4 5, and a finishing-pass, 6, as shown. Thusconstructed, the rolls A B would have only the usual capacity-viz, onesize of angle-iron; but by the construction shown in Fig. 1 it will beobserved that an additional groove, a, is made between passes 1 and 2.This I call an edging-groove. It is cut in the rolls at right angles tothe position of pass 1, half in each roll, and, like pass 1, it presentsthe double convex a; x; but, instead of a corresponding opposite face, Imake the sides straight. It will be further observed that groove a,measuring the longest way, is not as large as groove 1. Consequently if,after passing the billet through groove 1, I turn it on edge and pass itthrough groove to, it will be reduced considerably in width. Now, takingin consideration the fact that in rolling angle-iron with properattention to draft the edge of the bar is not materially affected andthe width of each side changed but little from the first to thefinishing pass, my object will be readily understood, for if I pass theML let, as ordinarily, through grooves 1, 2, 3, 4, 5, and 6, I producethe bar of an gle-iron exhibited in section at Fig. 2; but if I pass thebillet through the groove 1, and then through the V edging-groove abefore going through pass 2, and then proceed as before, I produce thebar exhibited in section by Fig. 3.

It will thus be manifest that with an ordinary set of an gle-iron rolls,by the introduction of the edging-groove a, I am enabled to produce twodistinct sizes of finished bar.

In Fig. 4 I have a similar set of grooves, 1, 2, 3, 4, 5, and 6, and inaddition two edginggrooves, 11 c, groove b being narrower than groove 1,and groove 0 narrower than groove I), the thickness of the three beingabout the same. In this arrangement I produce three sizes of bar. Passes1, 2, 3, 4, 5, and 6 produce the size shown by Fig. 5; passes l, b, 2,3, 4, 5, and 6 produce that shown by Fig. 6; and

passes 1 b c 2 3 4 5 6 produce the size shown by Fig. 7. Thus with buttwo edging-grooves and the one set of roughing, shaping, and finishinggrooves I am able to finish three dis tinct; sizes of angle-iron, wherehitherto either three pairs of rolls or three sets of grooves, eachhaving a full complement of the usual grooves, have been foundessential.

The saving of constructive cost and the economyofspace by my inventionare obvious, while the convenience and increased capacity need noargument to set them forth.

I claim as my invention- In angle-iron rolls, the combination, with theusual flat roughing, shaping, and finishing 15 grooves, of one or moreedging-grooves, substantialb as described, said edging groove or groovesbeing successively narrower than the roughing-groove.

In testimony that I claim the foregoing as my own I have hereto afli xedmy signature in presence of two witnesses.

JOHN L. LEWIS.

Witnesses:

T. J. MCTIGHE, T. J. PATTERSON.

